Heald frame with movable holding element fitted on the frame stave

Abstract

The frame staves (1, 1') of a heald frame have ribs (12, 13) on opposite sides of the stave extending toward the center of the frame. Movable holding elements (5, 26) on the staves include guide plates (6, 7) extending over the sides of the staves and having inbent edges (10, 11) that grip the ribs. The holding elements are drawn up against the staves by screw and spring arrangements.

What is claimed is: 
     
       1. In a heald frame assembly the improvements comprising: a. at least one frame stave (1, 1') with a hollow, closed cross-section having generally parallel side walls, and two ribs (12, 13) extending along the length of the frame stave and protruding beyond an end wall of the cross-section toward the longitudinal centerline of the heald frame assembly, said ribs being in the same planes as the side walls of the frame stave;   b. at least one holding element (5, 26) displaceably attached to said at least one frame stave, said holding element having portions with groove-shaped sections to engage said two protruding ribs, and   c. securing means (16, 21, 28, 29) to secure said at least one holding element to said at least one frame stave.   
     
     
       2. A heald frame according to claim 1 wherein each holding element comprises: a. two guide plates (6, 7) contacting the side walls of the frame stave (1, 1'), said guide plates having their edges closest to the longitudinal axis of the heald frame assembly formed in a general U shape to engage the protruding ribs (12, 13) of the frame stave; and   b. at least one distance plate (8, 9, 30) connected between the two guide plates, said distance plate being spaced apart from an outer wall (20) of the frame stave.   
     
     
       3. A heald frame according to claim 2 wherein the securing means comprises: a. a plate (18) rigidly affixed to the distance plate (8, 9), said plate having a threaded hole therethrough;   b. a spring device (21) inserted into the space between the at least one distance plate (8, 9) and the outer wall (20) of the frame stave; and   c. at least one screw (16) threaded into the hole through said plate (18) and bearing against said spring device so as to press said spring device against the outer wall (20) of the frame stave and thereby prevent undesired relative motion between the holding element and the frame stave.   
     
     
       4. A heald frame according to claim 2 wherein the distance plate has at least one hole therethrough and the securing means comprises: a. a pressure element (28) inserted into the space between the at least one distance plate (30) and the outer end wall (20) of the frame stave; and   b. at least one screw (29) inserted into said at least one hole through the distance plate (30) and bearing against the pressure element to press said pressure element against the frame stave to prevent undesired relative movement between the holding element and the frame stave.   
     
     
       5. A heald frame according to claim 1 wherein the lowermost portion of both ribs (12, 13) are the same distance from the centerline of the heald frame assembly. 
     
     
       6. A heald frame according to claim 1 wherein one side wall of the frame stave extends further toward the centerline of the heald frame assembly than does the remaining side wall. 
     
     
       7. A heald frame according to claim 2 characterized wherein at least one of the fixed guide plates (6, 7) is provided with an opening (23, 24), therethrough to adjust the securing means. 
     
     
       8. A heald frame according to claim 2, wherein at least one of the guide plates (6, 7) is provided with a gliding layer (14, 15). 
     
     
       9. A heald frame according to claim 1 wherein the holding element (26) is provided with a driving bush (27) suitable for a bolt of the frame drive. 
     
     
       10. A heald frame according to claim 1 characterized wherein at least one rib (12, 13) is provided with recessions (25) at spaced intervals along the length of the frame stave.